3wpb: Difference between revisions
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==Crystal structure of horse TLR9 (unliganded form)== | ==Crystal structure of horse TLR9 (unliganded form)== | ||
<StructureSection load='3wpb' size='340' side='right' caption='[[3wpb]], [[Resolution|resolution]] 2.40Å' scene=''> | <StructureSection load='3wpb' size='340' side='right' caption='[[3wpb]], [[Resolution|resolution]] 2.40Å' scene=''> | ||
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3wpc|3wpc]], [[3wpd|3wpd]], [[3wpe|3wpe]], [[3wpf|3wpf]], [[3wpg|3wpg]], [[3wph|3wph]], [[3wpi|3wpi]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3wpc|3wpc]], [[3wpd|3wpd]], [[3wpe|3wpe]], [[3wpf|3wpf]], [[3wpg|3wpg]], [[3wph|3wph]], [[3wpi|3wpi]]</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3wpb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3wpb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3wpb RCSB], [http://www.ebi.ac.uk/pdbsum/3wpb PDBsum]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3wpb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3wpb OCA], [http://pdbe.org/3wpb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3wpb RCSB], [http://www.ebi.ac.uk/pdbsum/3wpb PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3wpb ProSAT]</span></td></tr> | ||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | </div> | ||
<div class="pdbe-citations 3wpb" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Toll-like Receptors|Toll-like Receptors]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 20:34, 9 March 2017
Crystal structure of horse TLR9 (unliganded form)Crystal structure of horse TLR9 (unliganded form)
Structural highlights
Publication Abstract from PubMedInnate immunity serves as the first line of defence against invading pathogens such as bacteria and viruses. Toll-like receptors (TLRs) are examples of innate immune receptors, which sense specific molecular patterns from pathogens and activate immune responses. TLR9 recognizes bacterial and viral DNA containing the cytosine-phosphate-guanine (CpG) dideoxynucleotide motif. The molecular basis by which CpG-containing DNA (CpG-DNA) elicits immunostimulatory activity via TLR9 remains to be elucidated. Here we show the crystal structures of three forms of TLR9: unliganded, bound to agonistic CpG-DNA, and bound to inhibitory DNA (iDNA). Agonistic-CpG-DNA-bound TLR9 formed a symmetric TLR9-CpG-DNA complex with 2:2 stoichiometry, whereas iDNA-bound TLR9 was a monomer. CpG-DNA was recognized by both protomers in the dimer, in particular by the amino-terminal fragment (LRRNT-LRR10) from one protomer and the carboxy-terminal fragment (LRR20-LRR22) from the other. The iDNA, which formed a stem-loop structure suitable for binding by intramolecular base pairing, bound to the concave surface from LRR2-LRR10. This structure serves as an important basis for improving our understanding of the functional mechanisms of TLR9. Structural basis of CpG and inhibitory DNA recognition by Toll-like receptor 9.,Ohto U, Shibata T, Tanji H, Ishida H, Krayukhina E, Uchiyama S, Miyake K, Shimizu T Nature. 2015 Apr 30;520(7549):702-5. doi: 10.1038/nature14138. Epub 2015 Feb 9. PMID:25686612[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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